Samuel m



N. PETERS, PHOTJJTHOGEAPHER, WASHINGTON D @einen faire @anni @timeSAMUEL M.` MEGUTGHEM. or rHILADEE-PHIA, PENNSYLVANIA. Leens Manilva.sassenage Jam 18, 1867.

IMPROVED METHOD 0F ADJUSTING ROLLBBS.

TO ALL WHOMIT MAY GONCERN: I

Be it known that I, SAMUEL M. MECUTCHEN, of Philadelphia, Pennsylvania,have invented an improvement in Rolling-Mills; and I do hereby declarethe following to be a full, clear, and exact description of the same.

Myjnvention consists ofl one or more wedges combined with the slidingbearing and set-screw of a rollingmill, substantially as describedhereafter, so that, should the screw become xed in-`consequence of anexcessive pressure applied to the same, it may be readily relieved bydriving back the w dgc.

In order to enable others skilled in the art to maire and use myinvention, will now proceed to describe its construction andoperation,reference'being had to the accompanying clrawing,iwhich formsa' part of this speci iieation, and in which- Figure 1 is a sectionalelevation Aof ar'olllng-mill with my improvement; and

Figure 2, a side vi'ewl y A is a baseplate,t`o which aresecurd theopposite frames B B, and in bearings a a in the side frames turn thejournals of the lower roller C, above which turns a parallel roller, C,the journals of the latter being' adapted to bearings b, arranged toslide vertically in-the frames. In a recess in thc top of each bearing`b iit two wedges c e, the latter resting on the former, and the thickend of one wedge being adjacent to the thin edge of the other, so thatthe upper side of the wedge e shall be parallel to the under side of thewedge c. Through the upper .cross-piece of each frame passes theV usualset-screw j', the lower end of which bears against the top of the 'upperwedge e. In rcllinganills of the ordinary construction the set-screwsare in direct contact with the bearings, so that when the plate or otherobject acted on becomes jammed between the rollers, and the latte: arethereby prevented from turning, such an upward pressure is frequentlyexerted against the screw thatit cannot beturned by the ordinaryappliances, and its end has to be cut away to allow the roller C to beraised and the partly-rolled plate to be withdrawn. When such anaccident occurs in a. mill with the above-described improvement,thefsetscrews may beinstantly relieved by driving back the lower wedges,the expense, labor, and delay required in cutting away the screws beingthus avoided. A single wedgemay be interposed between the set-screw andthe bearing, although two are preferable-for obvious reasons.

I claim as my invention, and desire/to secure by Letters Patentv Thearrangement, substantially 'as' described, of the wedges, slidingbearing b, and set-screwf, with a rollingmill, for the purpose specied.l

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

' SAMUEL M. MEcUfreHEN.

Witnesses:

C'nAELEs E. Fosrnn, W. J. R. DELANY.

